Abstract

The laterally coupled distributed feedback (LC-DFB) GaSb-based type-I quantum well cascade diode lasers using the second- and the sixth-order gratings to stabilize the output spectrum near 3.22 μm were designed and fabricated. The laser heterostructure contained three cascades. The devices were manufactured using a single dry etching step defining the 5-μm-wide ridge with 5-μm-wide gratings sections adjacent to the ridge sides. The grating coupling coefficients were estimated to be about 1  cm1. The stability of the single-frequency operation was ensured by alignment of the DFB mode to the relatively wide gain peak. The 2-mm-long second-order LC-DFB lasers generated above 10 mW of continuous-wave (CW) output power at 20°C in epi-side-up configuration and demonstrated power conversion efficiency above 2%. The sixth-order LC-DFB lasers showed lower efficiency but still generated several milliwatts of CW output power. The devices demonstrated a CW current tuning range of about 3.5 nm at the temperature of 20°C.

© 2017 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
External cavity type-I quantum well cascade diode lasers with a tuning range of 440  nm near 3  μm

Meng Wang, Takashi Hosoda, Jiang Jiang, Leon Shterengas, Gela Kipshidze, Aaron Stein, Tao Feng, and Gregory Belenky
Opt. Lett. 43(18) 4473-4476 (2018)

Recent progress of quantum cascade laser research from 3 to 12  μm at the Center for Quantum Devices [Invited]

Manijeh Razeghi, Wenjia Zhou, Steven Slivken, Quan-Yong Lu, Donghai Wu, and Ryan McClintock
Appl. Opt. 56(31) H30-H44 (2017)

Single-mode high-power interband cascade lasers for mid-infrared absorption spectroscopy

Carl Borgentun, Clifford Frez, Ryan M. Briggs, Mathieu Fradet, and Siamak Forouhar
Opt. Express 23(3) 2446-2450 (2015)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription